Accession Number : ADA332115
Title : Seismic Wave Propagation in Southern and Central Africa
Descriptive Note : Final technical rept. 1 Nov 93-30 Apr 97
Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF GEOSCIENCES
Personal Author(s) : Langston, Charles A. ; Nyblade, Andrew A. ; Zhao, Ming
PDF Url : ADA332115
Report Date : 18 SEP 1997
Pagination or Media Count : 24
Abstract : Structure of the crust and upper mantle in southern and central Africa is investigated using seismic data from the Global Seismic Network and a special PASSCAL deployment of stations in Tanzania, East Africa. Structure models are developed to understand wave propagation important to issues concerning the verification of the Comprehensive Test Ban Treaty and to also investigate the tectonic basis for the African "Superswell", a previously identified region of anomalously high topography covering the southern half of the African continent. Through modeling of regional and teleseismic P, S, and Pnl phases it is found that the upper mantle has relatively high velocities down to depths exceeding 700 km.
Descriptors : *WAVE PROPAGATION, *SEISMIC WAVES, *AFRICA, HIGH VELOCITY, TOPOGRAPHY, SEISMIC DATA, EARTH MANTLE, TANZANIA.
Subject Categories : Seismology
Distribution Statement : APPROVED FOR PUBLIC RELEASE